<template>
  <div id="PictureDetailPage">
    <ShareModal
      ref="shareModalRef"
      :link="shareLink"
    />
    <a-row :gutter="[16, 16]">
      <!-- 图片展示区 -->
      <a-col :sm="24" :md="16" :xl="18">
        <a-card title="图片预览">
          <a-image style="max-height: 600px; object-fit: contain" :src="picture.url" />
        </a-card>
      </a-col>
      <!-- 图片信息区 -->
      <a-col :sm="24" :md="8" :xl="6">
        <a-card title="图片信息">
          <a-descriptions :column="1">
            <a-descriptions-item label="作者">
              <a-space>
                <a-avatar :size="24" :src="picture.user?.userAvatar" />
                <div>{{ picture.user?.userName }}</div>
              </a-space>
            </a-descriptions-item>
            <a-descriptions-item label="名称">
              {{ picture.name ?? '未命名' }}
            </a-descriptions-item>
            <a-descriptions-item label="简介">
              {{ picture.introduction ?? '-' }}
            </a-descriptions-item>
            <a-descriptions-item label="分类">
              {{ picture.category ?? '默认' }}
            </a-descriptions-item>
            <a-descriptions-item label="标签">
              <a-tag v-for="tag in picture.tags" :key="tag">
                {{ tag }}
              </a-tag>
            </a-descriptions-item>
            <a-descriptions-item label="格式">
              {{ picture.picFormat ?? '-' }}
            </a-descriptions-item>
            <a-descriptions-item label="宽度">
              {{ picture.picWidth ?? '-' }}
            </a-descriptions-item>
            <a-descriptions-item label="高度">
              {{ picture.picHeight ?? '-' }}
            </a-descriptions-item>
            <a-descriptions-item label="宽高比">
              {{ picture.picScale ?? '-' }}
            </a-descriptions-item>
            <a-descriptions-item label="大小">
              {{ formatSize(picture.picSize) }}
            </a-descriptions-item>
            <a-descriptions-item label="主色调">
              <a-space>
                {{ picture.picColor ?? '-' }}
                <div
                  v-if="picture.picColor"
                  :style="{backgroundColor: toHexColor(picture.picColor),width: '16px',height: '16px',}"
                />
              </a-space>
            </a-descriptions-item>

          </a-descriptions>
          <a-space wrap>
            <a-button type="primary" @click="doDownload">
              免费下载
              <template #icon>
                <DownloadOutlined />
              </template>
            </a-button>
            <a-button type="primary" ghost @click="doShare">
              分享
              <template #icon>
                <share-alt-outlined />
              </template>
            </a-button>
            <a-button :icon="h(EditOutlined)" v-if="canEdit" type="default" @click="doEdit">
              编辑
            </a-button>

            <a-button :icon="h(DeleteOutlined)" v-if="canEdit" danger @click="doDelete">
              删除
            </a-button>
          </a-space>
        </a-card>
      </a-col>
    </a-row>
  </div>
</template>

<script setup lang="ts">
import { computed, onMounted, ref, h } from 'vue'
import { deletePictureUsingPost, getPictureVoByIdUsingGet } from '@/api/pictureController.ts'
import { message } from 'ant-design-vue'
import { downloadImage, formatSize } from '@/utils'
import { DeleteOutlined, EditOutlined, DownloadOutlined,ShareAltOutlined } from '@ant-design/icons-vue'
import { useLoginUserStore } from '@/stores/useLoginUserStore.ts'
import router from '@/router'
import ShareModal from '@/components/ShareModal.vue'


const props = defineProps<{
  id: string | number
}>()
const picture = ref<API.PictureVO>({})

const toHexColor = (input) => {
  // 去掉 0x 前缀
  const colorValue = input.startsWith('0x') ? input.slice(2) : input

  // 将剩余部分解析为十六进制数，再转成 6 位十六进制字符串
  const hexColor = parseInt(colorValue, 16).toString(16).padStart(6, '0')

  // 返回标准 #RRGGBB 格式
  return `#${hexColor}`
}

// 获取图片详情
const fetchPictureDetail = async () => {
  try {
    const res = await getPictureVoByIdUsingGet({
      id: props.id
    })
    if (res.data.code === 0 && res.data.data) {
      picture.value = res.data.data
    } else {
      message.error('获取图片详情失败，' + res.data.message)
    }
  } catch (e: any) {
    message.error('获取图片详情失败：' + e.message)
  }
}

onMounted(() => {
  fetchPictureDetail()
})

const loginUserStore = useLoginUserStore()
// 是否具有编辑权限
const canEdit = computed(() => {
  const loginUser = loginUserStore.loginUser
  // 未登录不可编辑
  if (!loginUser.id) {
    return false
  }
  // 仅本人或管理员可编辑
  const user = picture.value.user || {}
  return loginUser.id === user.id || loginUser.userRole === 'admin'
})

// 编辑
// 编辑
const doEdit = () => {
  router.push({
    path: '/add_picture',
    query: {
      id: picture.value.id,
      spaceId: picture.value.spaceId
    }
  })
}

// 删除
const doDelete = async () => {
  const id = picture.value.id
  const spaceId = picture.value.spaceId
  if (!id) {
    return
  }
  const res = await deletePictureUsingPost({ id })
  if (res.data.code === 0) {
    message.success('删除成功')
    if (spaceId) {
      router.push({ path: `/space/${spaceId}` })
    } else {
      router.push({ path: '/' })
    }
  } else {
    message.error('删除失败')
  }
}

// 处理下载
const doDownload = () => {
  const url = picture.value.originalUrl
  const filename = extractFilenameFromUrl(url) || 'image.png'
  downloadImage(url, filename)
}

function extractFilenameFromUrl(url: string): string | null {
  try {
    const urlObj = new URL(url)
    const pathname = urlObj.pathname
    const segments = pathname.split('/')
    const filename = segments[segments.length - 1]
    if (filename.includes('.')) {
      return filename
    }
    return null
  } catch (e) {
    return null
  }
}
const shareLink = ref('')
const shareModalRef = ref()

const doShare = (e: Event) => {
  e.stopPropagation()
  // 构造当前图片的分享链接
  const pictureId = picture.value.id
  if (!pictureId) return

  const link = `${window.location.protocol}//${window.location.host}/picture/${pictureId}`
  shareLink.value = link

  // 调用模态框的 openModal 方法打开弹窗
  if (shareModalRef.value) {
    shareModalRef.value.openModal()
  }
}

</script>

<style scoped>
#PictureDetailPage {
}
</style>
